H arnold



July 31, 1934. c. H. ARNQLD 1,968,669

PRINTING AND SEVERING MECHANISM FOR CASH REGISTERS Filed May 4, 1929 5Sheets-Sheet 1 H' alibczmgw July 31, 1 934. c. H. ARNOLD 1,963,669

PRINTING AND SEVERING MECHANISM FOR CASH REGISTERS Filed May 4 1929 5Sheets-Sheet 2 THE JOHN DOE DEPARTMENT STORE Thank You gjwuawtoc DATESERIAL No. I AMOUNT. TRS- B Charle H. M 590? *9 911.99AJ

BATE. SERIAL NO. M0 811 TRS.

24.00T-2" 59 07 *9,9'11.99AJ.

July 31, 1934.

PRINTING c. H. ARNOLD 1,968,669

AND SEVERING MECHANISM FOR CASH REGISTERS Filed May 4, 1929 5Sheets-Sheet .3

grvuemtoz Charles H. Arnold MW 2/ 2% W 31, I I c. H. ARNOLD 1,968,669

PRINTING AND SEVERING ,MECHANISM FOR CASH REGISTERS Filed May 4, 1929 5Sheets-Sheet 4 gmantoz Charles H. Amoild mmm v c. H. ARNOLD 1,968,669

PRINTING AND SEVERING MECHANISM FOR CASH REGISTERS July 31, 1934.

Filed May 4, 1929 5 Sheets-Sheet 5 FIG. 15

gnvento c Charles H. Arnold Hi auozwuw .2552 Eil- Patented July 31, 1934UNITE STATES PRINTING AND SEVERING MECHANISM CASH REGISTERS Charles H.Arnold, Dayton, Ohio, assignor to The National Cash Register Company,Dayton, Ohio, a corporation of Maryland Application May 4, 1929, SerialNo. 360,525

28 Claims.

This invention relates to registers and like machines, and is moreparticularly directed to improvements in the printing and severingmechanisms forsuch machines. 7

The printing device of the present invention is particularly adapted foruse in connection with cash registers of thetype disclosed inapplications for Letters Patent of the United States, SerialNos. 608,281and 687,305, filed December 21, 1922 and January 19, 1924, respectively,by Bernie M. 'Shipley, Patent Nos. 1,817,883, and 1,365,147, issued onAugust 4, 1931 andJune 28, 1932, respectively. One object of thisinvention is toprovide a printing mechanism with a novel scissors-motionsevering device having a compound movement.

Another object is to provide a novel and simplified means to control ascissors-motion severing device.

A further object is to provide in combination with a printing mechanism,a novel record material feeding device, together with novel controllingmeans therefor.

. Still another object is to provide a novel disabling means for theGeneva drive used in connection with the control device for the feedmechanism. 1 With these and incidental objects in vie the inventionconsists of certain novel features of construction andcombinations ofparts, the essential elements of which are set forth in ape pendedclaims and a preferred form or embodiment of which is hereinafterdescribed with reference to the drawings which accompany and form a partof this specification.

In the drawings:

Fig. 1 is a View in left elevation of the printing device, which isshown partly in section for clearness. i

Fig. 2 is a fragmentary view of the control lever for disabling theprinting mechanism.

Fig. 3 is a detail side View of the driving mechanism for the impressionhammer, and the record material severing means.

Fig. 4: is a view in front elevation, showing in detail thescissor-likerecord material severing means.

. Figs, 5 and 6 are detail views of the scissormotion controlling means,Fig. 6 being a perspective.

' Fig. 7 illustrates one form of a stub receipt printed and issued bythe machine.

M Fig. 8 is a view in rear elevation, partly in section, of thefon andoff knob, and a part of the mechanism adjusted thereby, to control theissuance of a receipt.

Fig. 9 is a detail View in front elevation of the record materialsevering device, showing the scissors in their partially retractedposition.

Fig. 10 is a similar view of the same mechanism with the scissors intheir fully retracted position. l I

Fig. 11 is a view in rear elevation, partly in section,. of theautomatic Geneva coupling for connecting the printer drive shaft to theGeneva drive for feeding the record material.

Fig. 12 is a detail side view of the receipt electro and impressionrolls and the mechanism which rotates them to feed the record material.

Fig. 13 is a detail perspective view of the Geneva drive disk.

" Fig. 14 is a disjoined perspective view of the Geneva drive for therecord material feeding means. I

Fig. 15 is a side elevation ofthe differential mechanism for a bank oftransaction keys.

Fig. 16 is an end View of partsshown in the lower left corner of Fig.15.

General description The printing mechanism disclosed herein in itspreferred form, is especially adapted for use in connection with amachine of the type to which are directed the above-mentionedapplications for Letters Patent, but it will be understood that, by afew minor changes, applicants printing device may be used on a number ofother types of cash registers or accounting machines, without departingfrom the spirit and scope of the invention.

A single: printing hammer is provided to make two successive impressionsor imprints at each operation of the machine, from type elements, on anissuingrecord material, or, an issuing receipt, as it will behereinafter referred to.

Two groups of electro and impression rolls are provided to printpredetermined data on the receipts, and to feed the record material fromwhich the receipts are severed, theelectro and impression rolls beingremovably assembled in the machine. A perforating device is mounted onone of the electro rolls to perforate the record material Web betweenthe two impressions made thereon. By causing two duplicate imprints tobemade on the record material with a space between them, and byperforating the record material web between said impressions, a stubreceipt is issued, thestub of which is readily detachable from the bodythereof.

Novel means is provided to sever the printed checks from the web ofrecord material, and a receptacle is provided to retain the severedreceipts in a position accessible to the operator.

A number of type carriers, only one 30 (Fig. 1) of which is shown, aresuitably journaled in the printing section of the machine, and areadapted to be differentially positioned in the usual and well-knownmanner, under the control of keys in the main register (not shown), towhich the printing mechanism is attached.

While in this illustrative form, the printing mechanism is adapted toprint on an issuing record material or receipt, it is evident that, byslight changes, it may be adapted to print on insertable slips, etc.,and On a detail record. strip retained in the machine.

The printing mechanism may be thrown on or off, that is to say, renderedeffective or ineffective to perform its functions, from three separatesources, namely, manually by adjustment of an on and ofi knob, manuallyby adjustment of a control lever adapted to condition the cash registerwith which the invention is adapted to be used, to make various kinds ofoperations, and automatically under the control of a plurality ofdepressible keys, not shown. When the printing device is thus disabled,the recordmaterial feed mechanism is disconnected from the printer driveshaft and other mechanism is controlled to interrupt the operation ofthe printing hammer and the receipt shearing device.

Explanation of the invention in detail The entire printing mechanism issupported in a printer frame 31 (Fig. 1) which, in turn, is suitablysecured to one of the main machine frames, not shown.

An ink ribbon 32 (Fig. 1) is alternately wound and unwound from a pairof spools 33 and 34 suitably journaled in a bracket (not shown)removably mounted in the printer frame 31. Any conventional mechanismmay be provided to feed the ribbon, a suitable ribbon reversing devicebeing provided to wind the ribbon on the spools alternately. The ribbonfeeding and reversing mechanisms are not shown herein, as these deviceshave no particular bearing on the present invention. The ribbon 32passes around the type elements 30, being guided by guard shells 35 and36 surrounding the type elements. The adjacent edges of the guards 35and 36 are spaced apart to form. apertures through which impressionhammers are driven to take impressions from the types at diametricallyopposite points of the type carriers, on the issuing record material andon a strip of detail record material, not shown, which latter isretained in the machine. (In one side, the ribbon passes between a checkor receipt chute 3'7 suitably supported on the guards 35 and 35 and thetype elements, the opposite walls of the chute 37 being apertured, as at38, through which one of the impression hammers 39 pivoted on a stud 40,is driven to take the impression on the issuing record material. Theribbon mechanism, including the spools 33 and 34 and the guards 35 and36, is mounted on a bracket, not shown, removably insertable in theprinter mechanism to facilitate the replacement of worn ribbons withunused ones.

The mechanism for operating the hammers 39 to make successiveimpressions at each operation of the machine-on the issuing receiptstrip or record material, is not shown herein, but a full and completedisclosure thereof may be had by reference to applicants co-pendingapplication, Serial No. 294,492, filed July 21, 1928, now Patent No.1,761,556, issued June 3. 1930.

Receipt feeding mechanism The receipt web 45 (Fig. 1) is unwound from asupply roll 46 journaled on a stud 47 projecting outwardly from theprinter frame 31. The web 45 passes around a guide stud at 44, whichsupports one end of a chute 48, said stud projecting from the frame 31.

Impression and feed rolls 52 and 5'? (Fig. 12) are mounted in a unitremovable endwise from the machine, such unit including end frames, oneof which 54 (Fig. 1) is at the outer end of the unit, the co-acting endframe being spaced apart therefrom and lying adjacent the printer sideframe 31. Cross rods 49 connect the respective end frames 54. Theimpression and feed rolls are journaled on hollow shafts 53, 58,respectively, having eccentric trunnions journaled in the respective endframes 54, and normally lie adjacent to and co-act with electro rolls 50and 55, respectively, journaled on studs 51 and 56, respectively,projecting from the printer side frame 31. Spring-pressed yokes 6'7 and68 journaled on the respective cross-rods 49 of the removable rollframe, carry ink rollers 65 and 66 and press them against theirrespective electrorolls 50 and 55. The ink rollers are journale-d onshafts 60 journaled in the yokes, the front ends of which shafts areextended to project through slots in the front end frame 54.

This mechanism is more fully explained in Letters Patent to Shipley, No.1,614,540, issued January 18, 1927.

The web 45 is led through the chute 48, and

between the couple formed by the electro roll 50 (Fig. 12) and itsimpression roll 52. The web 45 then passes between the second electroroll 55 and its co-acting impression roll 5'7. Means, hereinafterdescribed, is provided to rotate the rolls just The web 45 is now fedinto a curved chute 59 supported between the end frame 54 and itscompanion end frame (not shown) ,and then through the chute 37. Afterleaving the chute 37, the web 45 is fed through the shearing devicewhere, near the end of the operation, the printed and perforated receiptis severed from the web 45. The severing means and. the operating andcontrolling mechanism therefor, will be described later.

In withdrawing the impression feed roll unit from the machine, theimpression rolls 52, 57 and ink rollers 65, 66 are first cast off theirrespective electro rolls 50 and 55, as follows:

Mutilated gears 69 and '70 (Fig. 1) secured to the outer ends of theeccentric shafts 53 and 58,

respectively, mesh with teeth formed on the hub cam lever 71 clockwise(Fig. 1), turns the mutilated gears 69 and counter-clockwise to cast offthe eccentrically mounted rolls 52 and 57 from their electro rolls. Thelever 71 also brings cams 74, with which it is equipped, against theforward ends of the shafts 60 of the ink rollers 65 and 66 to rock saidrollersaway from the electro rollers. The walls of concentric slots 61formed in the cam lever 71 fit in annular grooves in the studs 51 and 56to retain the impression and ink rollers in the proper positions. Theseslots, when the cam lever is rocked clockwise, escape their studs andthe impression and feed roll frame is free to be removed en-dwise fromthe machine.

The above-described electro rolls, impression roll and ink rollermechanism, is old and well known in the art, and is fully illustratedand described in Letters Patent of the United States, Nos. 1,519,796 and1,614,540, granted March 1, 1927 and January 18, 1927, respectively, toB. M. Shipley.

Check feed driving mechanism Mechanism is provided to turn the electroroll 50 (Fig. 12) in counter-clockwise direction, and the electro roll55 in clockwise direction, at each operation of the machine, to feed thereceipt Web and to print thereon from the electro rolls 50 and 55. Thefeed of the web is intermittent, that is, the web is advanced betweenthe two successive imprints effected by the impression hammer 39(Fig. 1) the feed rolls being rotated to feed the receipt into positionto receive the second imprint, after which a 1 second longer step offeed is imparted to the web to advance it into position where theprinted receipt is severed from theweb. This intermittent drive isconveniently effected by a Geneva movement now to be described.

The check feed drive mechanism is best shown in Figures 11 to 14,inclusive. The forward end of a printer drive shaft 82 journaled in theprinter frame 31 and in the main register frame, carries a sleeve 81loosely mounted thereon and having a drive disk 88 fast thereto. Theprinter drive shaft 82 is given one complete rotation at each operationof the machine by suitable means, not herein shown, but fully disclosedin Figure 40 of the U. S. application for Letters Patent, Serial No.608,281, filed December 21, 1922, in the name of Bernie M. shipley, nowPatent No. 1,817,883, issuedAugust 4, 1931.

Also the sleeve 81, carrying the locking dis 107, drive disk 88 withlooking disk 88, and the cylinder cam 106, turns with the shaft 82 dueto the clutch connection 101, and also slides axially thereof.

Studs 83, 84 and 85 laterally projecting from one side face of the drivedisk 88, successively enter radial slots formed in a Geneva wheel 88fast on a hub journaled on a stud 87 projecting from the printer frame31. and serve as rundles to turn such wheel. A locking disk 88 mountedon the sleeve 81 and fast to the disk 80, normally prevents rotation ofthe Geneva wheel until the proper time during the rotation of the drivedisk 80.

The periphery of the locking disk 88 is cut away or recessed at pointsopposite the studs 88, 84 and 85, to afford clearance for the cogs ofthe Geneva wheel 86, the outer concave ends of the successive cogsfitting the unmutilated periphery of the locking disk, which maintainsthe receipt feeding mechanism locked during thetime the unmutilatedperiphery of the locking disk co-acts withthe cogs of the Geneva wheel.The studs 83, 84 and 85 each turn the Geneva wheel onefifth of onerotation in clockwise direction or a total of three-fifths of onerotation at each rotation of the drive shaft 82, a space being leftbetween the stud 83 and stud 84 greater in extent than the space betweenthe studs 84 and 85. The stud 83 imparts a single step of movement tothe Geneva wheel, after which there is a brief dwell to enable othermechanisms to function while the paper web is stationary, after whichthe drive disk, as it rotates, brings the studs 84, 85 into engagementwith the wheel. The studs 84 and 85 are so spaced relatively to eachother, that the combined movement imparted to the Geneva wheel therebyis continuous and, of course, equal to twice the movement imparted tothe wheel by the stud 83.

These movements of the wheel 88 are transmitted to the electro-rolls 50and 55 by a train of gears, one gear 89 (Figs. 1, 11, 12 and 14) ofwhich train is fast on one end of the hub 90 which carries the Genevawheel 86. The gear 89 meshes with an intermediate or idler pinion 91(Fig. 12) journaled on a stud 92 projecting from the printer frame 81.This pinion, in turn, meshes with a gear 98 journaled on the stud 56 andthe gear 93 meshes with a gear 94 on the stud 51. The gears 98 and 94are clutched to theelectro-rolls 55 and 59, respectively, by mechanism(not shown herein). The ratio of the Geneva movement and the train ofgears is such that three-fifths of one rotation imparted to the Genevawheel 86 by the studs 88, 84 and 85, is

sufficient to drive the electro-rolls 55 and 50, re.

spectively, one complete clockwise and one complete counter-clockwiserotation at each operation of the printing mechanism to feed the paperweb 45 between the first and second impressions, and again after thesecond impression has been made, to bring the printed receipt intoposition to be severed from the web.

A perforator knife (Fig. 12) is fixed in the electro-roll 50 in such amanner that, as it passes the point of contact of electro-roll 50 andits pressure roll 52, the perforator is forced through the paper web 45,to perforate the latter, as indicated at'96 (Fig. 7).

The driving disk 88 is so connected with the printer drive shaft 82 thatthe disk may rotate with the shaft, and be slidable axially thereof. Tothis end, a collar 181 (Fig. 14) fast on the printer shaft 82, carriesopposed lugs 102 and 103 thereon, fitting within longitudinal slots 104and 105 (Fig. 13), respectively, in a mutilated cylinder cam 188 mountedon the sleeve 81 fast to the grouped disks 88, 88 and a third disk 187.The slots 104 and 185 divide the cylinder cam 108 substantially into twohalves. The printer shaft 82 and its collar 101 are driven by anysuitable means through one complete rotation in counter-clockwisedirection at each operation of the machine, to rotate the cylinder 106and the Geneva drive disk 80, thereby operating the receipt feedingmechanism, as described above, and actuating other mechanism hereinafterdescribed.

Receipt feed control At certain operations of the machine, it is notdesired to issue a printed receipt, to prevent which, the receiptfeeding mechanism is disabled.

wheel 86, so that as the drive disk rotates, the studs are ineffectiveto advance the Geneva wheel.

The drive disk 80 on such withdrawal, carries with it the locking disk88 which would leave the Geneva wheel 86 unguarded, were it not for theprovision of the third disk 107, which is of exactly the same diameteras the locking disk 88 and is likewise mounted on the sleeve 81 so thatas the sleeve shifts to the left (Fig. 14) the unmutilated guard disk10'? takes the place of the locking disk 88 to lock the receipt feedmechanism against any operation. The disks 80, 88 and 107 and themutilated cylinder cam 106 are all mounted on the sleeve 81 to rotatewith the printer drive shaft 82, and slide as a unit axially of theshaft. This group of parts collectively, will hereinafter be referred toas the Geneva drive unit.

A spring 108 (Figs. 11 and 14) coiled about the printer drive shaft 82and compressed between a collar 109 fast thereon and the guard disk 10'?fast on the sleeve 81, constantly urges the Geneva drive unit towardsthe left to disable the receipt feed mechanism, but normally isprevented from shifting said unit by a node 110 on the rim of one of thehalves of the cylinder cam 106, bearing against the face of a beveledblock 111 on a circular bracket 112 fast on the side of the printerframe 31. As the printer shaft 32 and its sleeve 81 and cylinder cam 106rotate during the course of the operation of the machine, a second node113 on the cylinder cam 106, similar to the node 110, is brought to bearagainst the face of the block 111, and as the printer shaft 82 andsleeve 81 continue to rotate, this node 113 eventually, and at theproper time, escapes the block 111, whereupon the spring 108 is free toslide the Geneva drive unit toward the left to disable the receiptfeeding means.

Whether or not these parts may be so slid, at this time, depends furtherupon a control annulus 114 telescoped over the mutilated cylinder cam106 and having at one end an inwardly extending circular flange 120occupying an annular groove 121 (Fig. 14) formed by the periphery of theflange '29 of the sleeve 81 and the base of the cylinder cam 106 whichis larger in diameter than the flange '79 and is secured thereto bythrough bolts 97 passing through the drive disk 80 and locking disks 88and 107, (see Fig. 14). The annulus 114, therefore, slideslongitudinally with the Geneva drive unit and is free to rock in eitherdirection about the cylinder cam 106. The control annulus 114 carries apair of diametrically opposed tenons 122 and 123 on its edge facing thebracket 112. These tenons are adapted to be either in or out of linewith notches 124 and 125, respectively, formed in the bracket 112, sothat when the control annulus slides towards the left, under theinfluence of the spring 108 when the node 113 has escaped the block 111,the lugs may enter the notches, thereby permitting the spring 108 tocontinue to slide the Geneva drive unit to the left to disable thereceipt feed, or assuming that the tenons 122 are slightly out ofregister with the notches 124, 125, then, when the node 113 escapes theblock 111, the tenons 122 and 123 bear against the unrecessed face ofthe bracket 112 to hold the Geneva drive unit in its effective positionagainst the action of the spring 108. In other words, the entrance ofthe tenons 122 and 123 into the notches 124 and 125, or the non-entranceof the tenons into the notches, determines whether the receipt feeddriving mechanism shall operate or not.

A plurality of means is provided to determine the position of thecontrol annulus 114 (Figs. 11 and 14), thereby determining whether ornot a receipt shall issue. These means include a manually adjustable onand off knob, a manually set lever to condition the register oraccounting machine to perform various operations, and means setdifferentially under the control of a plurality of manipulative keys.The mechanism for setting the control annulus 114 under the control ofthe on and on knob, will be described first.

Receipt feed controlled by the on and off lcnob A flat ring 126 (Figs.11, 12 and 14) is mounted on a recessed shoulder formed on the controlannulus 114 and clutched thereto by teeth 135 (Fig. 14). The ring 126and the end of the annulus 114 constitute an abutment against which theface of the disk 80 bears, when the control annulus 114 rests againstthe bracket 112, the abutment sustaining the thrust of the spring 108,at this time. When the nodes 110, 113 on the cylinder cam 108 bearagainst the block 111, the cylinder cam takes the thrust of the spring108 directly and th control annulus 114 is free to be adjusted at thistime. As soon as the node 113, in rotating with the shaft 82, escapesthe block 111, however, the spring 108 slides the sleeve 81 with itsGeneva drive unit to the left (Fig. 14), whereupon the tenons 122 and123 either strike the face of the bracket 112 or enter their respectivenotches 124 and 125.

When the machine is at rest, the cylinder cam 108 in such position thatits node 110 bears against the stationary block 111 on the bracket 112and sustains the thrust of the spring 108, thereby relieving the controlannulus 114 and its ring 126 of the pressure of such spring, to free theannulus for adjustment, and as one means to manually position thecontrol annulus with its tenons 122, 123, at this time, there isprovided a tubular sleeve 143 (Fig. 8) telescoped over a long stud 144projecting from the printer side frame 31.

The outer end of this sleeve is knurled as at 145, to afford aconvenient grip for turning the 1 sleeve, the inner end of which sleevecarries a cam disk 142 (see Fig. 1), the periphery of which has a notch139 of graduated depth formed therein with seats at its higher and lowerends.

One arm of a bell-crank 133 fast on a shaft 134 journaled in the printerframe 31, carries a stud 140 yieldingly held in contact with theperiphery of the cam by a spring 140. A link 129 connects the remainingarm of the bell-crank 133 with the outer end of a long stud 130 (seealso Figs. 11 and 14) projecting from a lever 131 journaled on the stud87.

The link 129 is slotted, as at 128 (Fig. 12) to embrace a pin 12'?projecting from a lobe formed on the fiat ring 126 secured to thecontrol annulus 114.

The spring 140 constantly urges the bell-crank 133 in clockwisedirection to draw the link 129 towards the right, as viewed in Figs. 1and 12, the link 129, in turn, operating through the pin 127 to rock thering 126 and with it the control annulus 114 counter-clockwise toposition the tenons 122 and 123 into line with the notches 124 and 125,whereupon, as will be r membered, the receipt feeding mechanism isdisabled during the next operation of the machine.

. The position of the control annulus 114 (Fig.

14), however, may be governed. by the position of the disk142 (Fig. 1)through its graduated recess 139,.the bell-crank 133 and connectedparts.

The tubular sleeve 143 is internally shouldered (Fig. 8) to form a seatfor a plunger 151 held against the shoulder by a spring 150 confinedbetween the plunger and an abutment 152 on the stud 144. The pressure ofthe plunger 151 against its seat normally holds the tubular sleeve 143and its control disk 142 intheir innermost positions, and to insure theretention of the manually operable sleeve 143 and disk 142 in either ofits adjustedpositions, the disk is equipped with holes 148 spaced apartfrom each other a distance equal to that through which the sleeve 143 isturned, to set the control annulus 114. A pin149' projects from theprinter side frame 31 over. which pin either hole 148 is fitted, by thespring 150, when the sleeve is in either of its adjusted positions, tolock the sleeve 143 and control disk 142 in either of their setpositions. 1

Obviously, in setting the sleeve 143 and control disk 142, it isnecessary for the operator to first pull outwardly on the knurled sleeve142 to disengage the disk 143 from the locking pin 149, and then turnthe sleeve until further rotation is resisted by the contact of the roll146. on the bell-crank 133 with one or the other end wall of thegraduated recess 139 in the control disk 142, which indicates to theoperator that the desired adjustment has been made, whereupon theoperator releases the sleeve to the action of the spring 150, whichdraws the sleeve and control disk 142 inwardly to fit the appropriatehole 148 of the disk over the locking pin 149.

If desired, a spring 147 (Fig. 1) connected to the control disk 142, maybe provided to restore the control disk and its sleeve 143 to one oftheir adjusted positions, as soon as the control disk is disengaged fromthe locking pin, when the control disk has been set to the oppositeadjustmentprior to the preceding operation.

When the control disk 142 occupies the position in which it appears inFig. 1, it maintains the bell-crank 133 in its extreme counter-clockwiseposition, therebyholding the link 129 .in its left-hand position and thecontrol annulus 114 with the tenons 122 and 123 out of register withtheir notches 124 and 125, so that when the node 113 on the cylinder cam106 escapes the block 111 and the spring 108 acts to slide the Genevadrive unit and sleeve 81 towards the left, the tenons 121 and 122 willstrike the face of the bracket 112, to retain the Geneva drive in itseiiective position and feed a receipt. i

However, if the control disk 142 is turned clockwise from the positionshown in Fig. 1, the stud 146 influenced by spring 140, will settle intothe deeper seat in the recess 133, during the operation of the machine,and enable the spring 140 to rock the bell-crank 133 clockwise and drawthe link 129 towards the right. The link, in turn,

, will rock the control annulus 114 counter-clockwise until the tenons122 and 123 register with their notches 124, 125 so that, at the propertime, said tenons will enter their notches and enable the spring 108 toslide the Geneva drive unit towards the left, thereby disabling thereceipt feeding mechanism.

When the on and off knob or sleeve 143 is in its on position, as shownin Fig. 1, a receipt will be printed and issued at each operation of themachine, regardless of the adjustment of other receiptfeed controllingmeans, But, if the knob 143 is turned to its off position with the stud146 in the deeper seat of the control disk 142, no receipt will beissued, unless it is determined by the other receipt feed controllingmeans that a receipt is to be issued, in which case the bell-crank 133is rocked counter-clockwise independently of the control disk 142 torock the control annulus 114 to shift the tenons 122, 123 out of linewith their notches 124, 125, to retain the Geneva drive disk in itseifective position.

Check feed controlled by key As one such receipt feed controlling means,operable when the on and off knob or sleeve 143 is in its oil position,to eiiect the issuance of a receipt notwithstanding the apparentnegative control of the on and off knob, the following mechanism isprovided.

The keyboards of the machine to which this invention is applied, areequipped with rows of amount keys (not shown) and a row of special keys,which may be transaction keys to variously condition the machine, selectspecial totalizers,

etc.

' Such a row of special keys is shown at 251 (Fig. 15), depression ofany of which inserts its inner end'in the path of one arm of an elbowlever 252 pivotally mounted at 253 on the outer end of a rocking arm 254journaled on a hollow stud 255 supported in hangers 256 (one only beingshown), mounted on cross rods 257 extending between the main side framesof the machine.

The remaining arm of the elbow lever 252, as- I sisted by a link 258likewise pivoted to the rocking arm 254, supports an angular latch 259,the inner end of which normally lies in front of a shoulder 260 formedon an arcuate actuator 261 journaled on the stud 255 and connected by alink 262 to a cam lever 263 pivoted at 264 to one of the hangers 256.

Driving cams 265 fast on the drive shaft 266, cooperate with projections267 spaced apart on the forked end of the cam lever 263 to'rock thelatter first clockwise, then counter-clockwise.

The cam lever communicates such motion through the link 262 to theactuator 261 to rock the latter similarly.

Pat

yes

The actuator carries with it the arm 254 due to the latch connection259, until the free end of the elbow lever 252 strikes and is arrestedby the projected, inner end of a depressed key 251, whereupon the latch259 is withdrawn from engagement with the driving member 261 whichcompletes its clockwise travel.

Disengagemeht of the latch 259 from the actuator 261 engages the forwardend of the latch with the proper one of a series of notches 268 formedin an arcuate bar 269, mounted on the cross rod 257 and arrangedconcentrically with the path of travel of the arm 254, to retain the arm254 in that position at which the elbow lever 252 encountered the innerend of the depressed key 251, the uninutilated edge of the actuator 261,as it completes its travel, maintainingthe outer end of the latch 259 inlookihg position, against the tension of the usual restoring spring 244.a

The arm 254 is thus differentially positioned according to theparticular key depressed.

The actuator 261, on its return, picks up the differentially positionedarm 254 and returns it to home position in the manner well known in thistype of machine.

The differentially positioned arm 254 aided when necessary by aprojection 270 on the cam lever 263, transmits movement to indicatingand printing mechanisms (not shown) through a minimum movement beam 2'71pivoted at its forward end at 272 to the differential arm 254 andbifurcated at its rear end to embrace a pin 2'73 located intermediatethe ends of a link 274, the beam extending beneath the stud 255 on whichit fulcrums.

The upper end of the link 274 is pivoted to a segment 275 forming a partof the indicator mechanism, and the lower end of the link is pivoted toan arm 276 fast on a sleeve 27'? journaled on the cross shaft 155 (seealso Fig. 1) suitably mounted in bearings in the main side frames of themachine.

a A segment 278 connected with the arm 276 engages with a train ofmechanism (not shown) leading to a type carrier forming part of theprinting mechanism (also not shown).

The key-controlled differential mechanism just described, is old andforms a part of this invention only insofar as it coacts therewith toproduce the novel results.

Obviously, the differential arm 254 through the foregoing connections,differentially rotates the sleeve 2'77 and segment 278 to variouslyposition the corresponding type carrier (not shown), and this variouslyadjustable movement imparted to the segment 278 is utilized to Variouslyposition a control sector 154 (Figs. 1 and 15) journaled on the shaft155 with which coacts a feeler finger or beak 153 fast on the shortshaft 134 and turning with the bell-crank 133.

The control sector 154 has a stepped periphery, as indicated at 160, thehub of the sector having a cross-over tail 156 extending through anaperture formed in the segment 278, so as to partake of the diiferentialadjustment imparted to the segment under control of the keys 251.

It is obvious that with the roll 146 of the bellcrank 133 seated in thedeeper end of the recess 139, the provision of means other than thecontrol disk 142 which will rock the bell-crank 133 counter-clockwise(Fig. 1) against the tension of its spring 140, will shift the link 129to the left and turn the control annulus 114 clockwise (Fig. 14) toposition its tenons 122, 123 out of line with their notches, and thusprevent the displacement of the Geneva unit.

The periphery of the sector 154 is provided with a step 160 intermediatethe low portions 161, it being evident that such periphery may have anydesired configuration, any point of which may be positioned under theend of the feeler finger 153. This stepped periphery 160-161 of thesector 154 represents ten positions controlled by a row of nine keys 251and a zero or home position, and during an operation of the machine, thesector 154 is differentially positioned corresponding to the particularkey 251 depressed, the sector remaining in its last-adjusted positionuntil re-positioned under control of another key 251.

The height of the step 160 above the steps 161 (Fig. 1) of the controlsector 154, is substantially equal to the difierence in height betweenthe high and low seats of the recess 139, of the control disk 142, andit is obvious that, with the manually adjustable knob 143 in its offposition, at which time the roll 146 on the bell-crank 133 is alinedwith the deeper seat of the recess 139; and with the control sector 154adjusted to locate one of the low steps 161 in the path of the feelerfinger 153, the spring 140 'would'tend to rock the bell-crank to itsfarthest clockwise position to seat the roll 146 in the deeper seat andto cause the free end of the feeler finger 153 to contact the low step161.

Thereafter, while the adjustment of the control disk 142 remains thesame, it might well occur that a key 251 will be depressed to select thehigh step 160 of the control sector 154 for cooperation with the feelerfinger 153, whereupon any attempt to rock the control sector will causethe rise of the step 160 to contact the end of the finger and result inbreakage, strain or other damage to the machine, to avoid which, a stud162 is provided on the locking disk 167 which stud contacts a concaveedge 164 substantially concentric with the drive shaft 82, when themachine is at rest to restrain the lever 131 and bell-crank 133 againstyielding to the tension of the spring 140 until after sufficient timehas been afforded the key-controlled differential mechanism of Fig. 15,to properly position the control sector 154.

In operation, therefore, the stud 162, assisted by a supplementary stud163 also on the locking isk 167, traverses the concentric edge 164 ofthe lever 131 to hold the latter and consequently the control annulus114 in home position through.- out about 145 degrees of a completerotation, during which time, the bell-crank 133 with its roll 146 andthe feeler finger 153 are held suspended against the tension of thespring 140, to afford time within Which to position the control sector154.

The length of the concave edge 164 (Fig. 1)

of the lever 131 bears such relation to the length of the nodes 110, 113(Fig. 14) of the cylinder cam 106 in their contact with the block 111 onthe bracket 112, that the bell-crank 133 with the feeler finger 153, arereleased for operation just prior to the escape of the node 113 from theblock 111, the locking disk 88 having a sufficient unmutilated peripheryto hold the Geneva Wheel 36 against operation during the time occupiedby the studs 162, 163 in passing the concave edge of the lever 131, andthe time occupied by the nodes 110, 113 in passing the block 111.

It may be readily understood that a single shoe of a length tocorrespond with the positions of the studs 162 and 163, might be used inplace of the studs if desired.

If, on the previous operation of the machine, assuming the control disk142 to be positioned with its deeper seat in line with the roll 146 ofthe bell-crank 133, the feeler finger 153 found a low spot 161 on thecontrol sector 154, the spring 140 holds the tip of the finger incontact therewith at the end of the operation. It is, therefore,necessary to rock the feeler finger counter-clockwise to raise thefinger at the be- -ginning of the next following operation in order toenable adjustment of the control sector 154 to position its high step160 beneath the feeler finger, should a corresponding key 251 be'operated.

As the Geneva drive unit (Figs. 12 and 14) completes its rotation, theleading stud 1'62, projecting from the face of the auxiliary lockingdisk 10?, engages the upper end of the concave edge 164 of the lever 131and rocks the lever counter-clockwise slightly past theposition in whichit is shown in Figs. 1 and 12. This draws the link 129 towards the leftto rock the bellcrank 133, shaft 134 and feeler finger 153counter-clockwise toclear thehigh-step 1600f the control sector 154, sothat, on the next operation ofthe machine, the latter may be adjusted toits new position. i

Check feed controlled total lever member to reset the sleeve knob justprevious to a totaling or sub-totaling operation, means is provided torender the receipt feeding mechanism eifective when the sleeve is set atits off position. y

To this end, the usual total control lever 168 (Fig. 2) integral withthe cam-slotted plate 169, a fragment of which appears in Fig. 2, isjournaled on a stud 170 suitably supported in the machine for manualoperation. The lever 168-469 is the well known total control leverdisclosed in the above mentioned Shipley patent, and also fullydisclosed in the Fuller patent, No. 1,242,170, issued October 9, 1917,and in the patent to Shipley, No. 1,619,796, issued March 1, 1927. Whenthe lever 168-169 is rocked in either direction from its intermediateadding position (Fig. 2) to any of its several posititions to adjust themachine totake totals or sub-totals, the cam slot 171 in the plate 169wipes against a stud 172 entered therein and carried by an arm 173 of amultiplearmed lever 174 pivoted at 180 to rock thelever 174counter-clockwise. A stud 181 on an arm 182 fast ona through shaft 167(see also Fig. 1) journaled in the side frames of the machine, projectsthrough a slot 183 formed by another arm 184 of the lever 174 and an arm185pivoted at 180 andconnected to the arm 184 by a spring 186. The lever174 on its counter-clockwise travel, rocks the arm 182 and shaft 167clockwise, as viewed in Fig.2, or counter-clockwise, as viewed inFig. 1. At a point adjacent the feelerfinger 153, the through shaft 167carries an arm 166 having a projection 165 adapted to contact an arm 187extending upwardly from the feeler finger 153. If, on the last operationof the machine, the feeler finger 153rests on a low, step 161 of thecontrol sector 154, the arm 187, carried thereby, has been rocked intothe path of the projection 165. Hence, when the total control lever 168is adjusted prior to total or sub-total operations, and

rocks the through shaft 167 and arm 166 counterclockwise, the projection165 on the arm 166 strikes the arm 187 and rocks said arm and the feelerfinger 153, shaft 134 and bell-crank 133 counter-clockwise to shift thelink 129 towards the left. The link 129 rocks the control annulus 114clockwise so that the tenons 122, 123 are out of alignment with thenotches 124-125, so that when the nodes 113, 114 escape the block 111 tofree the Geneva unit to theaction of its spring 108, the'tenons 122, 123will contact the face of the bracket 112 and'hold the feed disk 80 inits effective position. The total control lever 168, when restored toits normal or adding-p'osition, rock s'the through shaft 167 clockwise,as viewed in Fig. 1, thereby releasing the feeler finger 153, shaft l34and bell-crank 133 to the action of the spring 140, which immediatelyrocks these parts clockwise until the finger 153 rests on a high step160 of the control sector 154, or the roll 146 seats in the shallowerend of the recess 139.

Near the end of each operation of the machine, regardless of whet ier areceipt has been issued or not, a beveled edge 188 of the node 110 onthe cylinder cam 106 rides up on the beveled end of the block 111 on thebracket 112 and cams itself and the Geneva drive unit towards the right,compressing the spring 108, and positioning the feed studs 83, 84, 85and the locking disk 88 in line with the Geneva wheel 86. I Y

Receipt web severing As heretofore explained, the leading end of thepaper web lies between the printing hammer 39 (Fig. l) and the typecarriers 30.

Assuming the controls set to eifect the issuance of a receipt, means(not shown herein but fully disclosed in the application of Charles H.Arnold, filed July 21', 1928, Serial No, 294,492 which resulted inPatent No. 1,761,555) operates after the type carriers aredifferentially positioned, to print the desired amount thereon, afterwhich the single feed stud 83 (Fig. 12) on the feed disk operates theGeneva Wheel 86, and train of gears 89, 91, 93 and 94, to advance theleading end of the paper web to present a second printing area thereon.to the type carriers 30. The printing hammer 39 is again operated toprint the same amount on the newly presented surface of the paper web,after which the two feed studs 84, operate the Geneva wheel to impart adouble feed to the leading edge of the paper web and cause it toprotrude from the usual discharge openingprovided in machines of thistype.

It now becomes desirable to sever the printed portion of the paper webfrom its supply45 to enable the operator to remove the printed receiptthus formed from the machine.

The leading end of the web has been perforated intermediate the twoimprints thereon and fed out of the chute 37, adjacent which thesevering means is located. 7

'In the present instance, the severing means includes a stationary bladeacross which a floating blade or scissor is adapted to be passed by theaction of a strong spring to shear the check from the web. Normally theblades lie in closed position, but early in the operation of themachine, the floating blade is retracted, stretching its operatingspring, and is latched in its retracted position. The floating blade isreleasedvery near the end of the operation of the machine by a triggerarrangement, and its spring immediately operates the floating blade tosever the receipt from the supply.

The stationary blade 190 (Figs. l, 4, 9 and 10) is secured at its outerend to a fixture 191 supported (in the outer end of the pivot stud 40for the hammer, the inner end of the stationary blade 190 being secureddirectly to the hammer stud 40 near its base. The floating blade 192 ispivoted on a stud 193 carried by one arm of a bell-crank 194 journaledon a stud 196 projecting from the stationary blade 199. An inherentlyresilient finger 197 (Figs, 1 and 4) projects laterally from a pointnear the outer end of a bracket 198 secured to the side frame 31, andpresses the outer end of the floating blade 192 against the stationaryblade 190. A spring 199 (Fig; l) coiled about the stud 196 andcompressed between a retaining washer 200 and a bearing washer 201presses the inner end of the floating blade 192 against the stationaryblade 190. A pin passing through the stud 196 near its outer end, holdsthe washer 200 in place.

A pair of cam plates 205 (Fig. 3) fast on the printer drive shaft 82,rock the bell-crank 194 counterclockwise from its closed position, shownin Fig. 4, to its open position, shown in Fig. 10, where it is latcheduntil near the end of the operation of the machine. The cams 205cooperate with rollers 207 and 208, respectively, on a cam arm 209 faston a shaft 210 journaled in the printer frame 31 and in one of themachine side frames. A link 211 connects an arm 212 fast on the shaft210 to one arm of bell-crank 213 fast on a shaft214 journaled in theprinter frame 31 and in a printer bracket 215 supported on the outer endof the pivot stud 40. The remaining arm of the bell-crank is pivotallyconnected to a slide 216 shiftably supported on a stud 217 pro jectingfrom the printer frame 31. The printer drive shaft 82 and the cams 205make one complete rotation in clockwise direction at each operation ofthe machine, to rock the cam arm 209, shaft 210 and arm 212 firstclockwise and then counter-clockwise to normal. The link 211 transmitsthis movement to the bell-crank 213 and shaft 214 to rock these partslikewise first clockwise to lower the slide 216, and thencounterclockwise to restore the slide to its normal position. The slide216 carries beveled ear 218 projecting at right angles to the slide,which ear, as the slide shifts downwardly, wipes past a roller 219 onthe remaining arm 225 of the bell-crank 194 to rock the bell-crankcounter-clockwise to one limit of its travel, as shown in Figure 10, andwith it the floating blade 192, to retract the latter and tension adrive spring 233. connected to a projection 221 of the bell crank 194.

The end of the arm 225 lies in the path of a nose 224 projectinglaterally from a latch 226 pivoted at 223 to the stationary blade 190,and spring-pressed, as indicated at 222, to bear upon the free end ofthe arm 225 at all times.

A trip finger 232 on the latch 226 takes over the toe 223 of 'a trip arm229 pivoted to one leg 230 of a bail 250 journaled on a stud 231projecting from the printer side frame 31.

The trip arm 229 is apertured to fit over the shaft 214 which limits itstravel in either direction, and its toe 228 lies behind and in contactWith the ear 218 on the slide 216.

As will be hereinafter noted, the trip arm 229 constitutes a couplingmember between the retracting means and the latch.

As the bell-crank 194 arrives in its retracted position, thespring-pressed latch 226 drops over the shouldered end of the arm 225 tohold the bell-crank 194 in its retracted position until near the end ofthe return movement of the slide 216, during which latter movement thebeveled ear 218 contacts the toe 223 on the free end of the trip arm 229to restore the trip arm 229 and disengage the latch 226 from theactuating bellcrank 194 to free the bell-crank to the action of itsstrong drive spring 233, whereupon the spring 233 rocks bell-crank 194sharply clockwise, carrying the floating blade 192 upwardly past thestationary blade 190 (Fig. 4) to sever the receipt, which, by this time,has been fed between the blades 190, 192.

The floating blade 192 has a compound movement on both its idle orretracting stroke and on its cutting stroke. This movement is madenecessary by the fact that, due to the compactness of the mechanism, thepivot point 196 of the scissor blade 192 is located so close to the edgeof the recept web 145 that an exceptionally large angle of movement isrequired to open the blades far enough to admit the full width of thecheck. In Figure 4, the floating blade 192 is shown in its completelyclosed position. Figure 9 shows the floating blade partially retracted,and in Figure 10, the floating blade appears fully retracted with thebeveled ear 213 on the slide 216 in its lower most position.

It will be remembered that the beveled ear 218, on its downwardmovement, engages the roller 219 on the bell-crank 194 to rock thebell-crank counter-clockwise about its pivot 196 and retract or cook thefloating blade 192. During the first part of such retracting stroke, thefloating blade 192 and the bell-crank 194 maintain the same relativepositions until the outer end of the floating blade 192 strikes a pin234 in the bracket 198, whereupon, as the bell-crank 194 continues itsuninterrupted counter-clockwise movement, the floating blade 192 turnson its pivot 193, since further counter-clockwise movement of the blade192 is blocked by the pin'234, the result being to rock the floatingblade 192 clockwise about its pivot 193, to withdraw the inner endthereof from the path of the paper 45. By providing this compoundmovement for the severing mechanism, a very small travel of thebell-crank 194 is required to carry the floating blade clear of the pathof the paper web.

When the bell-crank 194, under the influence of the slide 216 and theear 218, arrives at its maximum counter-clockwise movement, a lug 235(Figs. 4 and 9) on the inner end of the floating blade 192, strikes thepivot 196, to arrest the blade in its retracted position. After thefeeding studs 83, 84 and85 (Figs. 1, 12 and 14) on the Geneva drive diskhave completed their action on the Geneva wheel 86, to feed the receipt,which action is completed very shortly before the end of the operationof the machine, as can be seen from Fig. 14, wherein these parts appearin the positions they assume at the end of such operation, the beveledear 218 (Figs. 4-6, 9 and 10) on the slide 216, on its return stroke,contacts the toe 228, to disengage the latch 226 and release thebell-crank 194 to the action of its drive spring 233, which immediatelysnaps the bell-crank clockwise until it is arrested by the roller 219(Fig. 4) striking the ear 218 near the lower end of the bevel thereon,the slide 216 having returned the ear 218 to its uppermost positionbefore the bell-crank 194 was tripped. The compound movement' on thedown or idle stroke of the floating blade 192 is caused by the continuedtravel of the pivot 193 of the blade l92'after the forward end thereofstrikes the pin 234. The compound movement on the up stroke of thefloating blade is caused by a different means, however. At the beginningof its upward or cutting stroke, the inner end of the floating blade 192starts to sever the receipt from the web. This added resistance at theinner end of the floating blade would normally cause the blade to rockclockwise about the pivot 193, which would .tend to bring the blade intoparallelism with the receipt web, and defeat the ease of operation ofshearing stroke characteristic of the scissor-cutting movement.Therefore, means isprovided to overcome this tendency, and combinecompactness with ease of operation.

As the bell-crank 194 starts to rotate clockwise under the influence ofits drive spring 233, an inclined edge 236 (Fig. 10) on the heel of thefloating blade 192, strikes a stud 237 projecting from the bracket 198,contact. with, whi ch, due to the force of the spring 233, throws theinner end of the blade upwardly to. start cutting while the blade isrocking counter-clockwise .about its f .5 pivot 193. and thebell-crank194 is rocking clockwise about itspivot .196. .This movement continuesuntil the heel ofthe blade clears the stud 237, at which time a shoulder238 on the heel of the floatingblade 192 strikes the stud .196,whereupon further counter-clockwise movement of the floating blade 192;about its pivot 193, is blocked. ,;The shoulder 238 is concave toconform to and turn about the cylindrical surface, of the pivqt 196,and, at the time of contact of the shoulder 238 with the stud 196, thecurved edge 239 of the heel of,the blade, in which the inclined edge 236terminates, becomes concentric with the stud 196and clears thepin 237,thereby locking the heel or innerend of the blade between the pivot 196for the bell-crank and the pin 237, at the same time permitting thebladeto. rotate with thebell-crank 194 about the stud 196 to completethe cutting operation. It will be understood that this compound movementoccurs at 3 high speed under the influence of the spring 233.

Control of severing means When the receipt feedingmechanism is disabledby any of the several controls heretofore described, it is alsodesirable-to prevent operation ofthe severing means, as the repeatedoperation of the naked blades causes abnormal wear on the cutting edgesthereof. Thus,.since the scissor-operating means,-as illustrated inFig.3, functions at each operation of the machine, regardless .ofwhether a receipt is to beissued or not, it isznecessary to provide amanipulative coupling to disconnect the scissor-tripping device.

It will be recalled that the ear 218 (Figs. 4,. 5 and6) of theslide 216,onits return stroke, contacts the toe 228 of the trip arm 2 29 todisengage the latch 226 and release the movable blade of the scissorswhich was retracted at the down stroke of the slide 216. The trip arm229 (Figs. 1 and 5) is pivotally supported on the leg 230 of the bail250which carries an ear' 245 (Fig. 1) to which is pivoted a long link 246extendingdownwardlythrough the printing mechanism. andbifurcated atits'lower end to loosely straddlea stud 247 projecting from the printerside-framel31. A roller 248 on the link 246 projects across the cammedend 132 of one arm ofthe control bellcrank 133. As heretofore explained,the bell crank 133 is rocked clockwise by any one ofthe plurality ofmeans provided ior that purpose to disable the receipt feed mechanism,and on such movement the arm of the bell-crank cams the link 246upwardly slightly. torockthe bail 250 counterclockwise, thereby shiftingthe trip arm 229 towards the front of the machine to position a notch248 (Fig. 6). in the toe 228 into the path of the ear 218 on the slide216, so that, .on. its return stroke, said ear. will pass through .thenotch 248 without rocking the trip arm 229 or releasing the latch226.= lx The latch 226, therefore, remains effective to retain the movableblade 192 initsretracted position, until the nextoperation wherein areceipt is. to be issuedQQ'Ihe triparm..229 th'usse'rves as a couplingadjustable .under control of the operator to transmit motion from theretracting means to the latch 22 6 to releaseor trip the latter.

.. .Hammer disabling A v I Itis alsojdesirableto prevent operation ofthe printing hammer 39 (Fig. I) on operations when no receipt is to beissued. This is likewise conveniently accomplished through the controlbellcrank-133 and the link 246.

The remaining leg 249 of the bail 250 carries alaterally extendingfinger 251, (Fig. 4) which, when the bail 250 is rockedcounter-clockwise, as described above, to disable the severing device,swings beneath a projecting shoulder 243 on one of the arms of thehammer 39 to block the impression stroke of the hammer.

The means. for disabling the severing means, impression means and thereceipt feeding means are all under the, control of any of the threemanually set drives described above in connection with the receipt feedcontrol, namely, the on and off sleeve 143, the control keys 251 (Fig.and the total lever 168.

While the form of mechanism herein shown and described is admirablyadapted to fulfill the objects primarily stated, it is to be understoodthat it is not intended to confine the invention to the one formorembodiment herein disclosed, for it is susceptible of embodiment invarious forms allcoming within the scope of the claims which follow.

. What is claimed as new is:-

1. In a machine of the class described; the combination withmeans tofeed a record material; of severing mechanism therefor, including afloating blade having a heel; a coacting blade overlapped by the heel; ashiftable carrier to which the floating blade is pivoted; tension meansoperable nponthe carrier to press the heel of the floating blade againstits coacting blade; and other tension means operable upon the floatingblade opposite the heel to press the floating blade against the coactingblad 2. Iin a machine of the class described; the combination with meansto feed a record material; of severing mechanism therefor, including afloating blade having a heel; a coacting blade overlapped by the heel; apivctally mounted carrier to which the floating blade is pivotedintermediate its ends; the heel of the floating blade being recessed toembrace the pivotal point of the carrier; means to retract the carrierand floating blade; means to return the carrier and floatingblade; andmeans with which the heel of thefloating blade coacts during the firstpart of such return to control the angle of the floating bladerelativelyto the coacting blade.

3.1In a machine of the class described; the combination with means tofeed a record material; of a shears comprising a stationary blade and afloating blade, having a shifting pivot, to sever the record material;means to retract the floating blade; a latch to hold the floating bladeretracted; means operated by the retracting means to trip the latch andrelease the floating blade; and drive-means to operate the floatingblade-to sever the record material.

.4. In a machine of theclass described; the combination with means tofeed a record material; 'of a shears comprising a stationary blade and amovable blade to sever the record material; acam slide to retract themovable blade; a latch to hold the'movable blade retracted; meansoperated by movement of the slide to trip the latch to releasethemovable blade; drive means to operate the movable blade to sever therecord material; and means to disable the control of the slide over theblade. i i a 5.;In a machine of the class described,. the combinationwith means to feed a record material; of a severing means operable'intimed relation with the feeding means for the record material, includinga movable blade; means to retract the movable blade; a latch to hold themovable blade retracted; adjustable means normallyoperable by saidretracting means to trip the latch; drive means to operate the movableblade; and means controlled at will to shift the adjustable means toprevent its operation by said retracting means to trip the latch.

6. In a machine of the class described, the combination with means tofeed a record material; of a severing mechanism for the record material,including a movable blade; means to retract the movable blade; a latchto hold the movable blade retracted; adjustable means operable to tripthe latch; the adjustable means having an opening therethrough; a partnormally contacting with the adjustable means to operate the latter;drive means for the movable blade; and means controlled at will to shiftthe adjustable means to position the opening in the path of the part andthus render the adjustable means ineffective.

7. In a machine of the class described, the combination with means tofeed a record material and means to disable the former; of a severingmechanism for the record material, operating in timed relation therewithand including a movable blade; means to retract themovable blade; alatch to hold the movable blade retracted; adjustable means operable bythe retracting means to trip the latch; the adjustable means having apassageway therethrough; drive means for the movable blade; and means toshift the adjustable member to position the passage- Way in the path ofthe retracting means to render the latter inefiective to trip the latchduring operations in which the'feeding means is disabled.

8. In a machine of the class described, a severing means, including amovable blade; means to retract the movable blade; a latch to hold themovable blade retracted; a coupling between the latch and the retractingmeans 'to enable the retracting means to trip the latch; and means toshift the coupling out of the path of the retracting means so thatmovement of the latter will not be effective to trip the latch.

9. In a paper severing mechanism, the combi-'- nation of a pivotedcarrier; 9. severing blade pivotally mounted on the carrier and rockablerelatively thereto about a' pivot located a distance from the pivotabout which the carrier swings, means to retract the carrier and itsblade; means under control of the retracting means to latch the carrierin retracted position; and means to drive the carrier and its blade ontheir effective stroke.

10. In a paper severing mechanism, the combination'of a pivoted carrier;a severing blade pivotally mounted on the carrier; means to retract thecarrier and its blade; an abutment in the path of retraction of theblade and located on one side of the pivot thereof to cause the blade toswing in one direction relatively to its companion blade duringretraction; means to re-' store the carrier and its blade to normalposition; and a second abutment located on the opposite side of thepivot of the blade and lying in the path of return of the blade tocontrol its relation to its companion blade on the return stroke. 7 Y

11. In a paper severing mechanism, the combination with one blade; of apivoted carrier; a blade pivoted on the carrier,- and rockablerelatively thereto about a pivot located a distance from the pivot aboutwhich the carrier swings; means to retract the carrier; means to insurethe withdrawal of the retracted blade from its coacting blade; means torestore the carrier and its blade to normal position; and means withwhich the movable blade cooperates on its return to normal position toinsure a shearing cut.

12. In a paper-severing mechanism, the combination with a blade; of ashiftable carrier; a floating blade pivotally mounted on the carrier;means to retract the carrier and its floating blade; an abutment in thepath of retraction of the blade to cause the entire blade to withdraw adistance from its coacting'blade; means to restore the floating bladeand its carrier to normal position; a second abutment with which thefloating blade cooperates on its return to cause the blade to rock onits own pivot in a predetermined direction during the first part of suchreturn; a fulcrum apart from the pivot of the floating blade; and ashoulder on the floating blade adapted to contact the fulcrum to causethe floating blade to turn about the fulcrum as a center during thecompletion of its return stroke.

13. In a paper severing mechanism, the combination with a blade; of ashiftable carrier; a floating blade pivotally mounted thereon and havinga heel; means to retract the carrier and its blade; means to return thecarrier and its blade towards the first-named blade; means with whichthe heel of the blade contacts to control the angle of approach of themovable blade towards the first-named blade during the first part of thereturn stroke of the blade; a fulcrum; and a shoulder on the heel of theblade adapted to contact the fulcrum to cause the blade to turn aboutthe fulcrum as a pivot during the completion of its return.

14. In a paper severing mechanism, the combination of a shiftablecarrier; a blade pivoted intermediate its ends thereto; means to retractthecarrier and blade; means to return the carrier and its blade; andmeans to shift the axis of rotationof the blade from the pivotintermediate its'ends to one end of the blade.

15. In a machine of the class described; the combination with means tofeed a record material; of a fixed blade; a floating blade; a carrier onwhichthe floating blade is pivotally supported; a slide; a beveled earon the slide adapted to cooperate withthe carrier to retract thefloating blade when the slide is moved in one direction; a latch to holdthe floating blade and its carrier in retracted position; a couplingwhereby the beveled car when moved in another direction rocks the latchto release the retracted blade and its carrier; and drive means tooperate the carrier to cause the floating blade to shear the recordmaterial.

16. In a machine of the class described; the combination with a recordmaterial feeding mechanism and disabling mechanism therefor; of a fixedblade; a bell crank; a floating blade pivoted on one arm of the bellcrank and adapted to be moved across the fixed blade in timed relationto the feeding means to sever the record material; a latch adapted tocooperate with the other arm of said bell crank; means operable in onedirection to retract the floating blade and in the opposite direction toactuate the latch to release the bellcrank; a coupling to transmitmovement from the retracting means to the latch; and means to shift thecoupling to ineffective position to disable the latch releasing meansduring operations in which the feeding mechanism is disabled.

17. In a machine of the class described; the combination with a recordmaterial feeding means and disabling mechanism therefor; of a severingmechanism adapted to operate in timed relation therewith, including amovable cutting blade; 2. carrier on which the movable cutting blade ispivotally mounted; means to shift the carrier to retract the movableblade; a latch to hold the carrier in retracted position; a couplingintermediate the latch and the retracting means to enable the latter totrip the latch and release the carrier; means to rock the carrier tocause the movable blade to sever the check; and means to shift thecoupling to ineffective position relatively to the retracting meansduring operations in which the feeding means is disabled.

18. In a paper severing mechanism; the combination with a fixed cuttingblade; of a pivoted carrier; 2. floating blade pivoted on the carrier;means operable upon the carrier to retract the floating blade; anabutment in the path of one end of the floating blade to cause the bladeto rock about its pivot on the carrier on its retraction; means to latchthe carrier in its retracted position; means to release the carrier;means to drive the carrier on its severing stroke; and a second abutmentin the path of the opposite end of the floating blade to control thefloating blade on its severing stroke and cause the blade to rock aboutits pivot on the carrier.

19. In a paper severing mechanism, the combination of a shiftablecarrier; a movable blade pivotally mounted on the carrier; a latch tohold the carrier in retracted position; means to retract the carrier andto release the latch; drive means to operate the carrier on its severingstroke; and abutments located on opposite sides of the pivotal point ofthe blade to coact with the movable blade to cause the latter to rotatein one direction about its pivot on the carrier during its retractionand to rotate in the opposite direction on the severing operation.

20. In a paper severing mechanism; the combination of a shiftablecarrier; a movable blade pivotally supported on the carrier; means toshift.

the carrier to retract the movable blade; a latch to hold the carrierretracted; means to connect the retracting means and the latch, andadjustable into the path of the retracting means to enable theretracting means to release the latch and free the carrier and movableblade; means to drive the carrier and movable blade upon their release;abutments in the path of retraction and return of the movable blade tocause the blade to rotate on its pivot on the carrier; and means towithdraw the connecting means to prevent its operation by the retractingmeans.

21. In a machine of the class described, having record dispensingmechanism; means to feed the record material; means to disable thefeeding means; a severing means comprising a stationary blade and apivotally mounted movable blade to sever the record material; meansoperating in timed relation with the feeding means to retract themovable blade; a latch to hold the movable blade in retracted position;means operated by the retracting means to trip the latch and release theretracted blade; and means to render the retracting means ineffective totrip the latch when the feeding means is disabled.

22. In a machine of the class described, in combination with means tofeed a record material; of means to sever the record material, includinga movable severing member; means operable to cook the movable severingmember; means to latch the movable severing member in cocked position;means causing the cooking means to move the latch to release thesevering means; and means controlled at will to render operation of thecocking means ineffective to move the latch.

23. In a paper-severing mechanism, in combination with a blade; of ashiftable carrier; a floating blade pivotally mounted on the carrier;means to retract the carrier and its floating blade; an abutment in thepath of retraction of the blade to cause the entire blade to withdraw adistance from its co-acting blade when retracted; and a guide means toinsure a shearing cut during its return; the guide means including ashoulder on the floating blade, causing the blade to swing through apath non-concentric with its pivot point, upon its return stroke.

24. In a machine of the class described, a severing mechanism includinga movable knife blade pivoted intermediate its ends to a driving member,another blade coacting therewith, and means associated with the knife tocause a shearing action of the knife progressively along its edge, theshearing being performed on both sides of the pivot.

25. In a machine of the class described, the combination with means tofeed a record material; of means to sever the record material, includinga movable severing member; means to cook the movable severing member;means to latch the movable severing member in cocked position; means tomove the latch to release the severing member; mechanism movable to aposition in which it will render the latch moving means ineffective; andmechanical means to render the latch moving means effective irrespectiveof the position of the said mechanism.

26. In a calculating machine, a severing mechanism having an operatingarm, a knife mounted on a pivot on said arm, said pivot being movable ina definite path by the arm, a cam on the knife, and a stud cooperatingwith the cam, the parts being so positioned that the path of the knifepivot and contour of the cam together determine the path to be taken bythe knife during a severing stroke.

27. In a calculating machine; a severing mechz anism including a knife;an arm pivoted to the knife to guide the knife; and a stationary memberto further guide the knife, said arm adapted to slide the knife relativeto the stationary member when guiding the knife.

28. In a calculating machine, a severing mechanism including a pivotedblade movable about a plurality of pivots during a severing stroke, amechanical means to move the blade in one direction about one of itspivots, and means coacting with the mechanicalmeans to move the blade inthe opposite direction about the other one of its pivots.

CHARLES H. ARNOLD.

